12. Which of the following expressions are equivalent to \( 6 x-12 y+24 \) ? Choose all that apply. A. \( 18 x y \) B. \( 6(x-2 y+4) \) C. \( 6(x-2 y-4) \) D. \( 2(3 x-6 y-12) \) E. \( 2(3 x-6 y+12) \) F. \( 3(2 x-4 y+8) \) G. \( 3(2 x-4 y+6) \) H. \( 24+12 y+6 x \)

What are \( a \) and \( b \) when you write \( \sqrt{-16} \) in the form \( a+b i \), where \( a \) and \( b \) are real numbers?

Give the domain of \( (x)=\frac{x+2}{2 x^{2}-5 x-18} \) using interval notation The domain of \( f(x) \) is:

Solve the inequality. Graph the solution. \( \begin{array}{lll}\text { (7) } 5.8 y+5<3 & \text { 6. } 3 p+2 \geq-10 & \text { 7. } 2>8-\frac{4}{3} h \\ \text { 8. }-2>\frac{m}{6}-7 & \text { 9. }-1.2 b-5.3 \geq 1.9 & \text { 10. }-1.3 \geq 2.9-0.6 r\end{array} \)

\( - 8.3 + x = - 12.5 \quad [ - 5.2 ] \)

\begin{tabular}{l|l|}\hline 2. Explain to someone who missed class how you would write \( (3-5 i)(-2+4 i) \) in the form \( a+b i \), \\ where a and b are real numbers. \end{tabular}